1. Load Bearing Bar
Member that carries the load between supports.

2. Transverse Bar / Cross Bar
Member fixed at right angles to bearing bars to provide lateral support.

3. Pitch – Load Bearing Bar & Transverse Bar / Cross Bar
Distance center-to-center of bearing bars and transverse bars / cross bars.

4. Binding Bar
Member or section fixed to the edge of a grating, flush with the top of the bearing bar.

5. Length (Span Direction)
Overall measurement in a direction parallel to the bearing bars.

6. Toe Plate / Kick Plate
Flat bar welded to a grating panel, projecting above the top of the load bearing bars.

7. Width
Overall measurement in a direction at right angles to the load bearing bars.

8. Load Bearing Types: Plain or Serrated
Plain: Load bars with a smooth top surface.
Serrated: Load bars with notches formed on the top surface to improve slip resistance.

9. Nosing Bar
A slip-resistant bar welded to the front of a stair tread or grating panel.

10. End Plate
A plate welded to a stair tread for fixing to a steel stringer.